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[Bug 845577] Re: mii-tool reporting incorrect duplex mode

 

Still present in 15.10;  I rewired a new jack twice before I realized
what was going on here.

# lspci
00:00.0 Host bridge: Intel Corporation 4th Gen Core Processor DRAM Controller (rev 06)
00:02.0 VGA compatible controller: Intel Corporation Xeon E3-1200 v3/4th Gen Core Processor Integrated Graphics Controller (rev 06)
00:03.0 Audio device: Intel Corporation Xeon E3-1200 v3/4th Gen Core Processor HD Audio Controller (rev 06)
00:14.0 USB controller: Intel Corporation 9 Series Chipset Family USB xHCI Controller
00:16.0 Communication controller: Intel Corporation 9 Series Chipset Family ME Interface #1
00:1a.0 USB controller: Intel Corporation 9 Series Chipset Family USB EHCI Controller #2
00:1b.0 Audio device: Intel Corporation 9 Series Chipset Family HD Audio Controller
00:1c.0 PCI bridge: Intel Corporation 9 Series Chipset Family PCI Express Root Port 1 (rev d0)
00:1c.2 PCI bridge: Intel Corporation 9 Series Chipset Family PCI Express Root Port 3 (rev d0)
00:1c.3 PCI bridge: Intel Corporation 9 Series Chipset Family PCI Express Root Port 4 (rev d0)
00:1c.4 PCI bridge: Intel Corporation 9 Series Chipset Family PCI Express Root Port 5 (rev d0)
00:1d.0 USB controller: Intel Corporation 9 Series Chipset Family USB EHCI Controller #1
00:1f.0 ISA bridge: Intel Corporation 9 Series Chipset Family H97 Controller
00:1f.2 SATA controller: Intel Corporation 9 Series Chipset Family SATA Controller [AHCI Mode]
00:1f.3 SMBus: Intel Corporation 9 Series Chipset Family SMBus Controller
02:00.0 Ethernet controller: Realtek Semiconductor Co., Ltd. RTL8111/8168/8411 PCI Express Gigabit Ethernet Controller (rev 06)
03:00.0 PCI bridge: Intel Corporation 82801 PCI Bridge (rev 41)
05:00.0 Ethernet controller: Intel Corporation 82574L Gigabit Network Connection

PCI ID of Controller is the one integrated into my Gigabyte H97M-D3H
motherboard.

02:00.0 0200: 10ec:8168 (rev 06)


# mii-tool 
SIOCGMIIREG on eth0 failed: Input/output error
SIOCGMIIREG on eth0 failed: Input/output error
eth0: negotiated 100baseTx-FD flow-control, link ok
eth1: negotiated 1000baseT-HD flow-control, link ok

# ethtool eth1
Settings for eth1:
	Supported ports: [ TP MII ]
	Supported link modes:   10baseT/Half 10baseT/Full 
	                        100baseT/Half 100baseT/Full 
	                        1000baseT/Half 1000baseT/Full 
	Supported pause frame use: No
	Supports auto-negotiation: Yes
	Advertised link modes:  10baseT/Half 10baseT/Full 
	                        100baseT/Half 100baseT/Full 
	                        1000baseT/Half 1000baseT/Full 
	Advertised pause frame use: Symmetric Receive-only
	Advertised auto-negotiation: Yes
	Link partner advertised link modes:  10baseT/Half 10baseT/Full 
	                                     100baseT/Half 100baseT/Full 
	                                     1000baseT/Half 1000baseT/Full 
	Link partner advertised pause frame use: Symmetric Receive-only
	Link partner advertised auto-negotiation: Yes
	Speed: 1000Mb/s
	Duplex: Full
	Port: MII
	PHYAD: 0
	Transceiver: internal
	Auto-negotiation: on
	Supports Wake-on: pumbg
	Wake-on: g
	Current message level: 0x00000033 (51)
			       drv probe ifdown ifup
	Link detected: yes

-- 
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Touch seeded packages, which is subscribed to net-tools in Ubuntu.
https://bugs.launchpad.net/bugs/845577

Title:
  mii-tool reporting incorrect duplex mode

Status in net-tools package in Ubuntu:
  Confirmed
Status in net-tools package in Debian:
  Confirmed

Bug description:
  mii-tool reports half duplex on full duplex connection when using
  RTL8168 series network cards. Ethtool does report the right speed.

  Same bug reported on debian by someone else.
  http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=561851

  terminal:
  #sudo mii-tool
  eth0: negotiated 1000baseT-HD flow-control, link ok

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